1) Frielingsdorf H, Simpson DR, Thal LJ, Pizzo DP. Nerve growth factor promotes survival of new neurons in the adult hippocampus. Neurobiology of Disease 2007; 26:47-55. PMID: 17270453

2) Rose BS, Simpson DR, Nath SK, Mundt AJ. Hypofractionated radiotherapy in the elderly: sometimes less is more. Aging Health 2009; 5:359-67.

3) Yashar CM, Simpson DR, Scanderbeg D. Strut-Adjusted Volume Implant: multichannel, single-entry brachytherapy for accelerated partial breast irradiation. Expert Review of Obstetrics & Gynecology 2009; 4:593-600.

4) Nath SK, Simpson DR, Rose BS, Sandhu AP. Recent advances in image-guided radiotherapy for head and neck carcinoma. Journal of Oncology 2009; 2009:752135. PMID: 19644564

5) Simpson DR, Lawson JD, Nath SK, Rose BS, Mundt AJ, Mell LK. Utilization of advanced imaging technologies for target delineation in radiation oncology. Journal of the American College of Radiology: JACR 2009;6:876-83. PMID: 19945044

6) Nath SK, Lawson JD, Wang JZ, Simpson DR, Newman CB, Alksne JF, Mundt AJ, Murphy KT. Optically-guided frameless linac-based radiosurgery for brain metastases: clinical experience. Journal of Neuro-Oncology 2010; 97:67-72. PMID: 19701719

7) Nath SK, Sandhu AP, Rose BS, Simpson DR, Nobiensky PD, Wang JZ, Millard F, Kane CJ, Parsons JK, Mundt AJ. Toxicity analysis of postoperative image-guided intensity-modulated radiotherapy for prostate cancer. International Journal of Radiation Oncology, Biology, Physics 2010; 78:435-41. PMID: 19939580

8) Nath SK, Lawson JD, Simpson DR, Vanderspek L, Wang JZ, Alksne JF, Ciacci J, Mundt AJ, Murphy KT. Single-isocenter frameless intensity-modulated stereotactic radiosurgery for simultaneous treatment of multiple brain metastases: clinical experience. International Journal of Radiation Oncology, Biology, Physics 2010; 78:91-7. PMID: 20096509

9) Simpson DR, Lawson JD, Nath SK, Rose BS, Mundt AJ, Mell LK. A survey of image-guided radiation therapy use in the United States. Cancer 2010; 116:3953-60. PMID: 20564090

10) Nath SK, Carmona R, Rose BS, Simpson DR, Russell M, Lawson JD, Mundt AJ, Murphy KT. Observed magnetic resonance imaging changes in pediatric patients treated with stereotactic radiosurgery for intracranial tumors. Child's nervous system: ChNS : Official Journal of the International Society for Pediatric Neurosurgery 2011;27:399-406. PMID: 20927529

11) Pan H, Simpson DR, Mell LK, Mundt AJ, Lawson JD. A survey of stereotactic body radiotherapy use in the United States. Cancer 2011; 117:4566-72. PMID: 21412761

12) Simpson DR, Einck JP, Nath SK, Sethi, RA, Wang JZ, Mundt AJ, Sandhu AP. Comparison of daily cone-beam computed tomography and kilovoltage planar imaging for target localization in prostate cancer patients following radical prostatectomy. Practical Radiation Oncology 2011;1:156-62. PMID: 24673945

13) Simpson DR, Song WY, Moiseenko V, Rose BS, Yashar CM, Mundt AJ, Mell LK. Normal tissue complication probability analysis of acute gastrointestinal toxicity in cervical cancer patients undergoing intensity modulated radiation therapy and concurrent cisplatin. International Journal of Radiation Oncology, Biology, Physics 2012; 83:e81-6. PMID: 22516388

14) Pan H, Rose BS, Simpson DR, Mell LK, Mundt AJ, Lawson JD. Clinical practice patterns of lung stereotactic body radiation therapy in the United States: a secondary analysis. American Journal of Clinical Oncology 2013; 36:269-72. PMID: 22495454

15) Simpson DR, Martínez ME, Gupta S, Hattangadi-Gluth J, Mell LK, Heestand G, Fanta P, Ramamoorthy S, Le QT, Murphy JD. Racial disparity in consultation, treatment, and the impact on survival in metastatic colorectal cancer. Journal of the National Cancer Institute 2013; 105:1814-20. PMID: 24231453

16) Simpson DR, Sanghvi PS, Sandhu AP. Lung SBRT for Early Stage Non-small Cell Lung Cancer in Patients with Prior Pneumonectomy: A Case Report. Journal of the National Comprehensive Cancer Network 2014; 12:1513-6. PMID: 25361797

17) Lau SK, Zhao X, Carmona R, Knipprath E, Simpson DR, Nath SK, Kim GY, Hattangadi JA, Chen CC, Murphy KT. Frameless single-isocenter intensity modulated stereotactic radiosurgery for simultaneous treatment of multiple intracranial metastases. Transl Cancer Res 2014; 3(4):383-390.

18) Simpson DR, Mell LK, Cohen EE. Targeting the PI3K/AKT/mTOR pathway in squamous cell carcinoma of the head and neck. Oral Oncol 2015; 51(4):291-298. PMID: 25532816

19) Lau SK, Zhao X, Carmona R, Knipprath E, Simpson DR, Nath SK, Kim GY, Hattangadi JA, Chen CC, Murphy KT. Single-isocenter frameless volumetric modulated arc radiosurgery for multiple intracranial metastases. Neurosurgery 2015. PMID: 25856109.

20) Simpson DR, Scanderbeg DJ, Carmona R, McMurtrie RM, Einck J, Mell LK, McHale MT, Saenz CC, Plaxe SC, Harrison T, Koonings PP, Mundt AJ, Yashar CM. Clinical Outcomes of Computed Tomography-Based Volumetric Brachytherapy Planning for Cervical Cancer. International Journal of Radiation Oncology, Biology, Physics 2015; 15:00465-4. PMID: 26130230.