Books and Chapters
Thesis (M.D/ Ph.D)
International Publications
Publications in National Journals

Books and Chapters

•  Proceedings of the Xth International Conference on the Use of Computers in Radiation Therapy,Editors: S. Hukku & P.S. Iyer, Lucknow, 1990.
• Comparative analysis of two different fractionated schedules of external beam radiotherapy and high dose   rate afterloading brachytherapy in the treatment of carcinoma cervix. M.D. thesis of Shikha Halder, 1994.
• Comparision of two dosage protocols of combined external and HDR Intraluminal radiation therapy in the   treatment of carcinoma oesophagus. M.D. thesis of Sapna Nangia, 1994.
•  Datta NR, Prasad SN, Maria Das KJ. Role of External radiotherapy in the management of thyroid cancer. In :  A monograph on Thyroid Cancer. S.K. Mishra, (editor). Japan International Co-operation Agency   (JICA),  119-128, 1997.
•  Datta NR, Prasad SN. Role of chemotherapy in the management of thyroid cancer. In : A monograph on   Thyroid Cancer. S.K. Mishra, (editor). Japan International Co-operation Agency (JICA), 129-132, 1997.
•  A randomized clinical trial comparing con-commitant chemoradiotherapy versus radiotherapy along in advanced  head and neck cancers. M.D. thesis of Y.S.Nagar. 1998.
• Datta NR, Maria Das KJ. Multisectional Planning : Its Utility in Radiation Therapy Planning with refrence to  ICRU 50 Reporting Guidelines. In : Advances in Medical Physics. M.M. Rehani (editor). Jaypee Brothers Medical Publishers (P) Ltd., 70-79, 2000.
• Sawlani V, Jain S, Kumar S. Post operative Imaging – Which and when? Indian Clinical Neurosurgery Vol II, Malignant Brain Tumors. Eds A. K. Singh, CBS Publishers and Distributors, New Delhi, 2002.

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• Datta NR, Tanwar RK, Hukku S. Construction of three dimensional dose distribution model using a conventional PC-AT treatment planning system. In Proceedings of Xth International Conference on Computers in Radiation Therapy, pp 175-177, 1990.
• Comparative analysis of two different fractionated schedules of external beam radiotherapy and high dose rate afterloading brachytherapy in the treatment of carcinoma cervix. M.D. thesis of Dr.Shikha Halder, 1994.
• Comparision of two dosage protocols of combined external and HDR Intraluminal radiation therapy in the  treatment of carcinoma oesophagus. M.D. thesis of Dr.Sapna Nangia, 1994.
• A randomized clinical trial comparing con-commitant chemoradiotherapy versus radiotherapy along in advanced head and neck cancers. M.D. thesis of Dr.Y.S.Nagar. 1998.
• Dynamics of poly-?-benzyl-L-glutamate (?-helix) &  poly-?-benzyl-L-aspartate (?-sheet) and  Computer aided radiation therapy. Ph.D thesis of Dr.K.J.Maria Das, 1999.
• A prospective randomised trial of postoperative concomitant boost radiotherapy for anaplastic astrocytoma and glioblastoma  multiforme.M.D. thesis of Dr.Udaiveer Panwar, 2000.
• Utility and predictive value of the micronucleus assay in patients of carcinoma cervix undergoing radiation therapy. M.D. thesis of Dr.Shalini Singh, 2000.
• A randomised clinical trial comparing concomitant chemotherapy versus radiotherapy alone in carcinoma of the esophagus. M.D. thesis of Dr.Kisley Dimri, 2001.
• A study on the geometric variation of intracavitary applicators during multiple high dose rate brachytherapy in carcinoma cervix and its impact on dose specification and reporting. M.D. thesis of Dr.Rimpa Basu, 2001
• Concomittant boost radiotherapy with concurrent chemotherapy in locally advanced head & neck cancers: A phase I/II trial. M.D. thesis of Dr. Manish Pandey, 2001.
• Chemo-irradiation versus radiotherapy alone in locally advanced carcinoma of the uterine cervix – a phase III trial. M.D. thesis of Dr.Saibish Kumar, 2002.
• Concomitant boost radiotherapy with or without concurrent chemotherapy in locally advanced head and neck cancers- a phase III trial. M.D. thesis of  Dr.Narendra Kumar, 2003.
• A study of multi-modality imaging for three dimensional radiotherapy treatment planning of brain tumors. Ph.D thesis of Mr.Rajasekar, 2004.
• Comparative assessment of dose distribution in cancer cervix based on point A versus image based target volume during high dose rate brachytherapy. M.D. thesis of Dr.Anurita Srivastava, 2004.
• A randomized comparison of short course hypo fractionated radiotherapy versus conventional radiotherapy for poor prognosis malignant glioma. M.D. thesis of Dr. Sunil Choudhary, 2005.
• Six fractions a week conventional radiotherapy along with concurrent chemotherapy in locally advanced head and neck cancers - a phase I / II trail. M.D. thesis of Dr. Ranjeet Bajpai, 2005.
• A phase II study of concurrent chemo-radiotherapy using cisplatin 5 FU in advanced head and neck cancers. M.D. thesis of Dr.Neha Gupta. (On going).
•  Chemo-radiation in locally advanced carcinoma of gallbladder - a phase II Study. M.D. thesis of Dr. Rakesh Rawat. (On going).
• A study of radiation induced white and gray matter changes in patients of brain tumors. M.D. thesis of Dr. Shantanu Sapru. (On going).
• Six fractions a week conventional radiotherapy along with low dose daily Cisplatin chemotherapy in locally advanced head and neck cancers - a phase I / II trail. M.D. thesis of Dr.Anshu Goel, (On going).
  

• Datta NR, Tanwar RK, Hukku S. Construction of three dimensional dose distribution model using a conventional PC-AT treatment planning system. In Proceedings of Xth International Conference on Computers in Radiation Therapy, pp 175-177, 1990.
• Datta NR, Maria Das KJ, Pradhan S, Ayyagari S. Development of realistic low cost 3D dose distribution model using a conventional IBM PC AT for carcinoma cervix treatment planning. Med Biol Eng Comput 29:1099, 1991.
• Datta NR, Maria Das KJ, Ayyagari S. Three dimensional representation of dose distribution for intracavitory brachytherapy in carcinoma cervix. Endocurie/Hyperthermia Oncol 9:133-137, 1993.
• Tanwar RK, Datta NR, Hukku S, Tandon P, Pradhan S. Limited Wegner's granulomatosis. Pak J Otolaryngol 9:41-42, 1993.
• Hukku S, Ayyagari S, Datta NR, Rastogi N, Maria Das KJ. Optimization of dose schedules in high dose rate brachytherapy in cerival cancer.(Abs) Proc European Congress of Radiology, Vienna, Austria, 1993.
• Hukku S, Maria Das KJ, Nangia S, Kumar A, Ayyagari S. The use of portal images to study the accuracy of radiation field alignment and patient positioning in head and neck cancer. Proc. XI International Conference on Computers in Radiation Therapy, Manchester, UK, Hounsell AR, Wilkinson JM, Williams PC (eds), 268-269, 1994.
• Hukku S, Ayyagari S, Datta NR, Arya AK, Rastogi N. Single dose and fractionated palliative radiotherapy for bone metastasis. Europ J Cancer 30:131, 1994.
• Maria Das KJ, Hukku S, Balasubramanian R, Ayyagari S. Quality assurance of external photon beam data on treatment planning system.(Abs) Medical Physics and Biomedical Engineering, RIO-94, Brazil, Physics in Medicine & Biology, Vol.39a, pp.523, 1994.
• Datta NR, Balasubramanian R, Maria Das KJ, Rao PB, Ayyagari S. Radiation therapy in carcinoma of the upper third of the esophagus: Optimization using multisection planning and brachytherapy. Endocurie/Hyperther Oncol 11:121-128, 1995.
• Datta NR, Maria Das KJ, Ayyagari S. Multisectional planning for external beam radiotherapy: A "poor person's" alternative to three dimensional treatment planning. Med Dosim 20:35-41, 1995.
• Prasad KN, Pradhan S, Datta NR. Urinary tract infection in patients of gynecological malignancies undergoing external pelvic radiotherapy. Gynaecol Oncol 57:380-382, 1995.
• Rastogi N, Hukku S, Datta N R, Ayyagari S, Maria Das K J. High dose rate brachytherapy in carcinoma cervix : Comparision oftwo dose schedules. (Abs) Proc. 12th Asia Pacific Cancer Conference, Singapore, pp. 308., 1995.
• Datta NR, Balasubramanian R, Maria Das KJ, Sharma S, Ayyagari S. Optimization of radiation therapy planning using multisectional dose-volume histograms. Roentgen Centinary Congress 1995, (work in progress) Birmingham, UK, 9-10, (Abs), 1995.
• Agarwal P, Sharma K, Gupta RK, Datta NR, Kumar S, Gujral RB. Acute bilateral opthalmoplegia secondary to metastatic prostatic carcinoma - Demonstration on Magnetic Resonance Imaging. J Neuro Opthal 15:45-47, 1995.
• Hukku S, Nangia S, Maria Das KJ, Ayyagari S. Chemotherapy and hyperfractionated radiotherapy in advanced head and neck cancer. Proc. American Radium Society, 78th Annual Meeting, France, pp.20,1995.
• Sharma K, Rastogi N, Srivastava R, Jain VK, Hukku S. Primary brain lymphoma. A brief review of clinical aspects and management. Neurosurg. Rev 18:193-199, 1995.
• Kumar S, Datta NR, Ahuja RC, Mali HR, Agarwal GN, Ayyagari S. Feasibility of non-cisplatin based induction chemotherapy followed by concurrent chemoradiotherapy in advanced head and neck cancers. Acta Oncol, 35: 721-725, 1996.
• Datta NR, Maria Das KJ, Ayyagari S. Spatial information on dose distribution using dose volume histograms. Med Dosim 21:19-22, 1996.
• Rastogi N, Datta NR, Aggarwal P, Gupta RK. Intramedullary spinal cord metastasis from choroidal melanoma- A case report and review of literature. Radiography 2:157-160, 1996.
• Prasad K R, Ibrarullah Md, Sikora S S, Kapoor V K, Saxena R, Gupta R K, Ayyagari S, Kaushik S P. Periampullary carcinoma - Factors influencing survival. The Cancer Journal, 9 : 329-333, 1996.
• Rastogi N, Datta N R, Aggarwal P, Gupta R K. Intramedullary spinal cord metastasis from chorodial melanoma - A case report and review of literature.Radiography. 2: 157-160, 1996.
• Rastogi N, Datta NR, Ayyagari S, Naik S. Carcinoma of prostate metastatic to the nasal mucosa. The Cancer Journal 9:54-55, 1996.
• Datta NR, Maria Das KJ, Haldar S, Ayyagari S. Midline shield for radiation therapy of carcinoma of the cervix: Should it be "midline" or "individualised"? Med Dosim, 21, 1997.
• Datta NR, Kumar S, Ayyagari S. Predicting the outcome of esophageal cancer to radiotherapy with multivariate modelling. (Abs) Radiother. & Oncol. 43(suppl.2), S71, 1997.
• Ayyagari S. 1,2,3 or 200 cGy/min. Does it make a difference in brachytherapy of cancer cervix?. (Abs) Radiother. & Oncol. 43(suppl.2), S54, 1997.
• Kumar S, Datta NR, Nayar YS, Pandey CM, Sharma SK, Ayyagari S. Can we predict the probability of immediate loco-regional disease control of head and neck cancers to radiotherapy? (Abs) Asia Pacific Congress of Int. Federation of Head and Neck Oncology Soc. 11-14 Dec.'97, 42, 1997.
• Rajasekar D, Datta NR, Maria Das KJ, Kumar S, Ayyagari S. Partial transmission block for optimization of anterior supraclavicular posterior axillary boost in the radiotherapy of carcinoma breast. Med. Dosim. 22, 105-108, 1998.
• Datta, N.R., Honess, D.J., Watson, J.V., Carpenter, T.A., Hall, L.D. Is in vivo tumour growth Gompertizian? A study based on cell kinetics, P-31 MRS and pO2 assys (Abs), Radioteher & Oncol. 48: (suppl.1), S 132, 1998.
• Datta, N.R., Kumar, S., Nangia S., Hukku, S., Ayyagari, S., A non randomized comparison of two radiotherapy protocols in inoperable squamous cell carcinoma of the oesophagus. Clin. Oncol. 10, 306-312, 1998.
• Datta, N.R., Kumar, S., Nagar, Y.S., Pandey, C.M., Sharma, S.K., Ayyagari, S. Predicting the outcome of head and neck cancers to radiotherapy with multivariate modelling. Progress in Radio Oncology VI, H.D. Kogelink & E. Sedlmayer (Ed), Monduzzi Editor, Bolgna, Italy, 543-548, 1998.
• Datta, N.R., Kumar, S., Maria Das, K.J., Halder, S., Pandey, C.M., Ayyagari S. Variations of the applicator geometry during multiple HDR Brachytherapy insertions and its influence on dose specifications in carcinoma cervix, (Abs), Radiother & Oncol. 47: (suppl.1), S 8, 1998.
• Datta, N.R., Honess, D.J., Watson, J.V., Carpenter, T.A., Hall, L.D. Is in vivo tumour growth Compertzian? A study based on cell kinetics, P-31 MRS and pO2 assays (Abs), Radiother & Oncol. 48: (suppl.1), S 132, 1998.
• Kumar, S., Datta, N.R., Kapoor, V.K., Thombare, M., Ayyagari, S. Carcinoma of the oesophagus: A comparison between surgery followed by post-operative radiotherapy versus radiotherapy alone (Abs). Radiother & Oncol. 48: (suppl.1), S 174, 1998.
• Pandey, C.M., Datta, N.R., Singh, S., Kumar, S., Nagar, Y.S., Prasad, S.N., Ayyagari, S. Prognostic factors of local control and overall survival in head and neck cancers treated with radiotherapy (Abs.) The XV International Scientific Meeting of the International Epidemiological Association, Florence, Italy, 31 st August-4th September 1999, Epidemiology for Sustainable Health., Vol.2, 345, 1999.
• Lal, P., Halder, S., Datta, N.R. Caricnoma of the penis metastasizing to the dorsal spine – a case report. Urol. Int. 62: 249-251, 1999.
• Datta, NR, Maria Das, KJ, Ayyagari, S. Biological integral dose: An alternate method for numerical scoring of rival plans. Med. Dosim., Vol.25, No.3, pp.155-162, 2000.
• Agarwal, G, Mishra, SK, Datta, NR, Jain, M. Occult squamous cell carcinoma of the axillary tail of breast presenting as isolated axillary lymph node mass. Eur J Surg. 166, 177-179, 2000.
• Datta, NR. Kumar S. Maria Das, KJ. Halder, S. Pandey, CM. Ayyagari, S. Variation of intracavitary applicator geometry during multiple HDR brachytherapy insertions in carcinoma cervix and its influence on reporting as per ICRU report 38. Radiother. Oncol. 60, pp.15-24, 2001.
• Maria Das KJ, Rajasekar D, Datta NR, Kumar S, Ayyagari S. Partial transmission block and its use as field integrated dose modifier in the treatment of carcinoma of the anal canal.  Radiother. Oncol. 58 (suppl.1) S114, 2001.
• Kumar S, Datta NR, Dimri K, Ayyagari S. A phase I/II trial of concurrent cisplatin chemotherapy and radiotherapy in unresected esophageal cancer, Radiother. Oncol. 58 (suppl.1) S120, 2001.
• Singh S, Lal P, Sikora SS, Datta NR. Squamous cell carcinoma arising from a congenital duplication cyst of the esophagus in a young adult. Ds of esophagus 14, 2001.
• Thakar A, Mohanti BK, Lal P, Bahadur S. Results of radiotherapy with or without salvage surgery versus combined surgery and radiotherapy in advanced carcinoma of the hypopharynx. Journal of Laryngol Otol 116(1): 29-32, 2002.
• Kumar S, Dimri K, Datta NR, Rastogi N, Lal P, Maria Das KJ, Ayyagari S. Safety and efficacy of concurrent cisplatin and radiotherapy in inoperable or metastatic squamous cell esophageal cancer.  Acta Oncologica 41, pp. 457-462,2002.
• D Rajasekar, NR Datta, KJ Maria Das, S Ayyagari. Electron beam therapy at extended SSD’s: an analysis of output correction factors for Mitsubishi linear accelerator. Phy Med. Biol. 43, 2002.
• Basu R. Rajkumar A, Datta NR. Anaphylaxis to cisplatin following nine previous uncomplicated  cycles: A case reprt. Int J Clin Oncol 7:365-367, 2002.
• Dimri K, Rastogi N, Lal P. Intracranial metastasis in carcinoma of the glottis. Lancet Oncol; 4:515-16, 2003.
• Datta NR, Nagar YS, Singh S, Narayan L. Loco regional failures in head and neck cancers. Can they be effectively salvaged by non surgical therapeutic modalities? Int J of Clin Oncol 8: 31-39, 2003.
• Rajasekhar D, Datta NR, Gupta RK, Pradhan PK, Ayyagari S. Multimodality image fusin in dose escalation study of brain tumors. J. Appi Clin Med Phys 4:8-16, 2003.
• Rajkumar A, Basu R, Dingra S, Datta NR, Gupta RK. Radiation therapy for sacral osteroblastoma. Clinical Oncology 15: 85-86, 2003.
• Basu R, Datta NR. Spontaneous expulsion of mediastinal lymphnode in carcinoma esophagus. Dis of Esophagus 16:1-3, 2003.
• Gupta M, Rastogi N, Lal P. Carcinoma of the gallbladder with unusual umbilical metastasis. Lancet Oncology 4:319-20, 2003.
• Mohanty PP, Pashricha R, Jain M, Datta NR. Primary chondroid cordoma of the petrous part of the temporal bone. Clinical Onclogy 2003.
• Datta NR, Maria Das KJ, Basu R, Singh U. Total reference air KERMA (TRAK): Its utility and the extent to which it can represent ICRU intracavitory reference volumes during multiple high dose rate brachytherapy? Brachytherapy, Vol.2, No.2, pp.1-97, 2003.
• Datta, N. R., Basu R., Maria Das, K. J., Rajasekar, D., Pandey, C.M., Ayyagari, S. Problems in reporting doses and volumes during multiple high-dose-rate intracavitary brachytherapy for carcinoma cervix as per ICRU Report 38:  A comparative study using flexible and rigid applicators, Gynecol Oncol 91:285 – 292, 2003
• Datta, N. R., Basu, R., Maria Das, K.J, Rajasekar, D., Pandey C.M., Singh U., Ayyagari S. Problems and uncertainties with multiple point A’s during multiple high - dose - rate intracavitary brachytherapy in carcinoma of the cervix. Clin Oncol, 16:129-137, 2004.
• Datta, N.R., Pascricha, R, Gambhir, S., Phadke R.V., Prasad, S.N. Postoperative residual tumour imaged by contrast-enhanced computed tomography and 201Tl-single photon emission tomography: Can they predict progression-free survival in high-grade gliomas? Clin Oncol,  16:494-500, 2004.
• Datta, N.R., Pascricha, R, Singh U., Srivastava, A. Predictors of survival end points in patients of cancer cervix on long term follow up: Inferences and implications from an audit of patients treated with a specific radiotherapy protocol. Clin Oncol, 16:536-542, 2004.
• Datta, N.R., Rajasekar, D. Optimization of radiation therapy facilities in developing countries: A proposal for a three-tier system using teleradiotherapy network. Lancet Oncol, 5:695-698, 2004.
• Nagar YS, Singh S, Datta N.R. Chemo-irradiation in persistent / recurrent head and neck cancers. Jap J Clin Oncol, 34: 61-68, 2004.
• Nagar YS, Singh S, Kumar S, Lal P. Conventional 4-field box radiotherapy technique for cancer cervix: potential for geographic miss without CECT scan-based planning. Int J Gynecol Cancer, 14:865-870, 2004.
• Rajasekar, D., Datta, N.R., Gupta, R.K., Rao, S.B. A graphical user interface for automatic image registration software designed for radiotherapy treatment planning. Med Dosim, 29:239-246, 2004.

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Publications in National Journals

• Datta NR. Thermochemotherapy - a review. Ind. J. Cancer Chemotherapy. Vol. 10, No. 2, 109-118, 1988.
• Pradhan S, Datta NR, Khan EM, Ayyagari S, Hukku S, Pandey R. Carcinosarcoma of ovary. J. Clin. Radiother. Oncol., 6 : 40-43, 1991.
• Pradhan S, Datta NR, Krishnani N,Ayyagari S, Tandon P. Giant cell tumour of petrous bone. Ind. J. Cancer,28: 177-180, 1991.
• Ayyagari S. Intracavitary therapy in carcinoma of the esophagus: Editorial Ind. J. Gastroenterol, 10: 40-42, 1991.
• Pradhan S, Datta NR, Ayyagari S, Hukku S, Maria Das KJ, Kumar S, Majumdar B. Computerized Tomography in Radiation Therapy Planning. AMPI Medical Physics Bulletin, 17: 6-10, 1992.
• Chander H, Singh P, Hukku S, Ayyagari S. An Evaluation of personality traits in cancer patients. J.Clin. Radioth., 8 (2): 77-80, 1993.
• Rastogi N, Datta NR, Ayyagari S. Fractured polyvinyl chloride Tracheostomy tube as a foreign body in tracheo bronchial tree. Ind. J. Chest Dis. Allied. Sci., 35: 89-91, 1993.
• Arya A K, Datta NR, Hukku S, Pandey R, Ayyagari S. Carcinosarcoma of uterus - A case report. J. Clin. Radiother. Oncol., 8: 44-45, 1993.
• Pradhan S, Datta NR, Prasad KN, Ayyagari S, Pandey R. Actinomycosis mimicking carcinoma of maxillary sinus. Ind. J. Cancer, 30: 1-4, 1993.
• Hukku S. The role of computers in Radiotherapy Planning - A reiview. J. Clin. Radioth. Oncol., 8: 39-41, 1993.
• Maria Das KJ, Hukku S, Balasubramnain R, Ayyagari S. Significance of a three dimensional computerized Styrofoam cutter, XV Annual conference of Medical Physics, J. ofMed. Phys., Vol.19 (No:4), pp.49-50, 1994.
• Kumar S, Datta NR, Hukku S, Ayyagari S. The time factor in the radical radiation therapy of carcinoma of esophagus. J. Clin. Radiother. Oncol., 10: 94-97, 1995.
• Datta NR, Maria Das KJ, Balasubramanian R, Sharma S, Ayyagari S. Is there an alternative to three dimensional treatment planning for external beam radiotherapy. Radiotherapy and Oncology’95, Proceedings of the XVIth Annual Congress of AROI and Roentgen Centenary celebration, Feb’95, M Krishnan Nair, B. Rajan, 126-135, 1995.
• Maria Das KJ, Datta NR, Balasubramanium R, Hukku S, Ayyagari S. Quality assurance of irregular beam dosimetry on TSG radplan system. Radiotherapy and Oncology’95, Proceedings of the XVIth Annual Congress of AROI and Roentgen Centenary Celebration, Feb’95, M. Krishnan Nair, B. Rajan, V.N. Bhattathiri (eds.), Regional Cancer Centre, Trivandum, 222-223, 1995.
• Halder S, Datta NR, Maria Das KJ, Balasubramanium R, Ayyagari S, Hukku S. A pilot study to evaluate two different dosage protocols of teletherapy and HDR brachytherapy for the radical radiation therapy of carcinoma cervix. Radiotherapy and Oncology’95, Proceedings of the XVIth Annual Congress of AROI and Roentgen Centenary Celebration, Feb’95, M. Krishna Nair, B. Rajan, V.N. Bhattathiri (eds.), Regional Cancer Centre, Trivandum, 226-227, 1995.
• Rao PB, Datta NR, Hukku S, Ayyagari S. Radiation therapy for Gliomas-SGPGI experience Radiotherapy and Oncology’95, Proceedings of the XVIth Annual Congress of AROI and Roentgen Centenary Celebration, Feb’95, M. Krishna Nair, B. Rajan V.N. Bhattathiri (eds.), Regional Cancer Centre, Trivandrum, 231, 1995.
• Rastogi N, Hukku S, Ayyagari S, Datta NR. Treatment results in non-small cell lung cancer (NSCLC) : A retrospective analysis. J. Clin. Radiother. Oncol., 10: 83-86, 1995.
• Rao PB, Datta NR, Hukku S, Ayyagari S. Hyperfractionated Radiotherapy in the management of malignant glioma : A pilot study. J. Clin. Radiother. Oncol., 10: 83-86, 1995.
• Kumar S, Hukku S, Datta NR, Sharma SK, Ayyagari S, Neoadjuvant chemotherapy in inoperable esophageal cancer: Is it superior to radiotherapy alone? J. Clin. Radither. Oncol. 10:31-35, 1995.
• Maria Das KJ, Hukku S, Datta NR, Balasubramanian R, Ayyagari S. Quality control of external photon beam data for treatment planning system. J. Clin. Radiother. Oncol., 11: 46-48, 1996.
• Balasubramanian R, Datta NR, Rajasekar D, Maria Das KJ, Ayyagari S. Influence of air gap on the dosimetric characteristics of the electron beam. J. Clin. Radiother. Oncol., 11: 55-57, 1996.
• Datta NR. Maria Das KJ, Ayyagari S, Kapoor SL, Kaushal V. Development of indigenous three-dimensional treatment planning system. J. Clin. Radiother. Oncol., 11: 75-80, 1996.
• Rastogi N, Hukku S, Ayyagari S. Primary lymphoma of the lung: A report of two cses. Indian J. Chest Dis. Allied Sci., 38: 123-128, 1996.
• Agarwal, S., Datta, N.R., Mishra, S.K., Kumar, S., Tandon, V., Ayyagari, S., Agarwal, A. Adjuvant therapy in invasive thymoma: An audit of cases treated over an 8 year period. Ind. J. Cancer, 35, 46-56, 1999.
• Datta NR, Hyperthermia: perspective as a fifth form of anti-cancer therapy. Cancer Care, 24-27, 1997.
• Maria Das KJ, Rajasekar D, Datta NR,  Ayyagari S. Inhomogeneity correction in a treatment planning system. Journal of Medical Physics, Vol.22, No.3, pp.66-68, 1997.
• Rastogi N, Ayyagari S. The role of intraluminal brachytherapy and 5- Fluorouracil chemotherapy in malignant bile duct obstruction with billiary stenting. Gastroentrology Clinics, 94-100, 1999.
• Agarwal, S., Datta, N.R., Mishra, S.K., Kumar, S., Tandon, V., Ayyagari, S., Agarwal, A. Adjuvant therapy in invasive thymoma: An audit of cases treated over an 8 year period.  Ind. J. Cancer, 35, 46-56, 1999.
• Datta NR, Kumar S, Ayyagari S. Multimodality approach in management of carcinoma esophagus. Hospital Today, 12, 592-601, 1999.
• Kumar S, Datta NR, Agarwal S, Ayyagari S. Adjuvant therapy in colon and rectal cancers – Current perspective. Hospital Today, 12, 585-591, 1999.
• Datta NR, Narayan L, Ayyagari S. Medical audit in tertiary care postgraduate institute : an example using evaluating treatment strategies in management of carcinoma esophagus, Proceedings of total quality management in hospitals. 47-56, 1999.
• Rastogi N, Ayyagari S. Role of chemo-radiation in management of pancreatic cancer – A review. Hospital Today, 5, 22-27, 2000.
• Lal P, Halder S, Datta NR, Ayyagari S. Primary CNS lymphoma : an audit of cases treated over a nine year period and review of the literature. Ind. J. Cancer, 37, 32- 43, 2000.
• Rajkumar A, Elhence V, Datta NR, Behari S, Gupta RK, Ayyagari S. Giant cell tumour of the occipital bone – A case report with review of literature. J. Clin. Radiat. Oncol. 1, 41-44, 2001.
• NR Datta, D Rajasekar, S Ayyagari. Anato-metabolic Imaging: Its future in Radiotherapy planning of brain tumours. J Clin Radiother Oncol, 1(4): 31-39, 2001.
• Datta NR, Basu R, Maria Das KJ, Pandey CM, Ayyagari S. Positional and geometric variation of rigid intracavitary applicator during multiple HDR brachytherapy of carcinoma cervix: Impact on reporting as per ICRU report 38. J. Clin. Radiat. Oncol. 2, 5-16, 2002.
• Maria Das KJ, Rajasekar D, Datta NR, Kumar S, Lal P, Ayyagari S. Partial transmission block technique for carcinoma of the anal canal and bilateral inguinal nodes radiotherapy. Journal of Clinical Radiotherapy and Oncology, Vol.2, No.2, pp.24-29, 2002.
• Rajasekar D, Maria Das KJ, Datta NR, Lal P, Ayyagari S. QA and re-commissioning tests of Ralstron-20B HDR brachytherapy unit, J. Med. Phys., Vol.27, pp-135-136, 2002.
• Lal P, Nagar YS, Kumar S, Singh S, Maria Das KJ, Naryana SL, Kumar R, Jain VK, Ayyagari S. Medulloblastomas: Clinical profile, treatment, techniques and outcome- An institutional experience. I J Cancer 39:97-105, 2002.
• Lal P, Maria Das KJ. Dosimetric comparison of MLC versus cerrobend block shielding techniques during cranial irradiation. J Clin Radiother Oncol, 1:9-15, 2003.
• Datta, N. R., Kumar, A., Basu R. Tumor regression dynamics with external radiotherapy in cancer cervix and its implications. Ind J Cancer 41:24-30, 2003.
• Maria Das KJ, Rajasekar D, Lal P, Dimri K, Ayyagari S. Quality assurance and utility of automatic 3D expansion of structures in conformal radiotherapy treatment planning. J Clin Radiother Oncol, 4:17-22, 2004.