Radiation Oncology

Radiation therapy tailored to your needs, your goals, your life


Monday – Friday
7:30 a.m. – 4:00 p.m.


(270) 762-1480 (Office)

(270) 767-3617 (Fax)


Regional Cancer Center
803 Poplar Street
Murray, KY 42071

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Message from the Staff

Welcome to the Radiation Oncology Department in the Regional Cancer Center at Murray-Calloway County Hospital. We understand that your journey with cancer can be challenging, and our dedicated team is here to provide the support and care you need, right in your own community. Whether you’re facing a new diagnosis or seeking relief during your treatment journey, we recognize that each patient’s story is unique. From your first visit to ongoing treatment and survivorship, we are here to stand beside you as partners and advocates, offering guidance and compassion every step of the way.

Radiation Treatment Types

At the Regional Cancer Center, we provide a comprehensive range of radiation therapy options, including:

3DCRT (3-Dimensional Conformal Radiation Therapy):

  • Utilizes CT scans to create a 3D representation of the tumor and surrounding tissues.
  • Shapes radiation beams to match tumor contours, delivering targeted doses while minimizing exposure to healthy tissues.

IGRT (Image-Guided Radiation Therapy):

  • Integrates advanced imaging technologies (e.g., CT, X-rays) to guide radiation treatment.
  • Offers real-time visualization for precise tumor targeting while reducing impact on healthy tissues.

SGRT (Surface Guided Radiation Therapy):

  • Utilizes surface imaging for accurate patient positioning during radiation therapy.
  • Monitors patient movement to ensure precise treatment delivery.

IMRT (Intensity-Modulated Radiation Therapy):

  • IMRT delivers highly targeted radiation beams that conform to the specific shape of the tumor, minimizing damage to surrounding healthy tissues.
  • Allows for varying intensities of radiation to be delivered to different parts of the tumor, maximizing effectiveness while reducing side effects.

VMAT (Volumetric Modulated Arc Therapy):

  • Advances IMRT by delivering radiation therapy in a continuous arc.
  • Adjusts beam characteristics dynamically, allowing for highly precise dose distributions and shorter treatment times.

SBRT (Stereotactic Body Radiation Therapy):

  • Administers high-dose radiation to small, localized tumors over a few treatment sessions.
  • Utilizes advanced imaging (e.g., CT, MRI) for precise tumor localization, particularly effective for challenging locations such as the lung, liver, or spine.

SRS (Stereotactic Radiosurgery):

  • Targets brain or CNS tumors with high-dose, precisely targeted radiation.
  • Offers single-session or fractionated treatment options with sub-millimeter accuracy, sparing surrounding healthy tissue.
  • Effective for small tumors and metastases.

Our Specialists

Alexander K. Diaz, MD, PhD, DABR, CSCS

Radiation Oncologist


  • Undergraduate: BS, University of Georgia
  • Medical School: MD, The George Washington University School of Medicine & University of Tennessee Health Science Center
  • Graduate School: PhD, University of Tennessee Health Science Center
  • Internship: Methodist University Hospital, University of Tennessee Health Science Center
  • Residency: Duke University Medical Center

Board Certification

  • DABR, American Board of Radiology

Additional Certification

  • CSCS, National Strength and Conditioning Association

Languages Spoken

  • English
  • Spanish

Why I Chose MCCH

I firmly believe that receiving care locally, surrounded by friends and family, is as therapeutic as the treatments we provide. I joined MCCH so that folks in this community can stay close to home and get the care they deserve.