About Assoc. Prof. Janjira Petsuksiri
Assoc. Prof. Janjira Petsuksiri is a Senior Consultant Radiation Oncologist and academic Associate Professor with 20+ years of clinical experience, recognised as one of the leading Radiation Oncologist specialist in Bangkok, Thailand. She is widely consulted by international patients for head & neck cancers, CNS tumours, and stereotactic radiosurgery.
- 20+ years of clinical experience in radiation oncology.
- MD with First Class Honours (1998) from Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok.
- International fellowships at Harvard Medical School (Brigham and Women's Hospital) and MD Anderson Cancer Center, USA.
- Former President for Academic Affairs, Thai Association of Radiation Oncology (2018-2021); 40+ peer-reviewed publications.
- Associate Professor and Consultant Radiation Oncologist at Siriraj Piyamaharajkarun Hospital / Faculty of Medicine Siriraj Hospital, Bangkok.
Qualifications & Credentials
Medical Degrees
- Doctor of Medicine (M.D.), First Class Honours — Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, 1998
Fellowships & Special Training
- Radiation Oncology Residency / Thai Board of Radiation Oncology — Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, 2002
- Clinical Fellowship in Adult CNS Radiotherapy and Radiosurgery — Brigham and Women's Hospital, Harvard Medical School, Boston, USA, 2005
- Clinical Fellowship in Advanced Radiation Oncology — The University of Texas MD Anderson Cancer Center, Houston, USA, 2007
Certifications & Accreditations
- Thai Medical Council Registration
- Thai Board of Radiation Oncology
- Thai Association of Radiation Oncology — Member
Areas of Expertise
Major Conditions Treated
- Head & Neck Cancers
- Brain Tumours & CNS Cancers
- Nasopharyngeal Cancer
- Cervical & Endometrial Cancers
- Prostate Cancer
- Breast Cancer
- Rectal Cancer
Sub-specialties
- Head & Neck and CNS Radiation Oncology: Precision radiotherapy for cancers of the head, neck, brain, and central nervous system — a trusted Radiation Oncologist in Bangkok for international patients seeking advanced cancer radiotherapy in Thailand.
- Stereotactic Radiosurgery (SRS/SRT): High-precision focused radiation for brain and CNS tumours.
- Image-Guided & Intensity-Modulated Radiotherapy: Modern IMRT and IGRT techniques for accurate, tissue-sparing cancer treatment.
Advanced Procedures & Treatments
- Intensity-Modulated Radiation Therapy (IMRT)
- Image-Guided Radiotherapy (IGRT)
- Stereotactic Radiosurgery & Radiotherapy (SRS/SRT)
- High-Dose-Rate (HDR) Brachytherapy
- External Beam Radiotherapy
- Chemoradiation Treatment Planning
List of Disease and Treatment for which Assoc. Prof. Janjira Petsuksiri can be consulted
Professional Experience
Current Affiliation
- Siriraj Piyamaharajkarun Hospital / Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok — Associate Professor and Consultant Radiation Oncologist, Present
Past Affiliations
- Brigham and Women's Hospital, Harvard Medical School, Boston, USA — Clinical Fellow in Adult CNS Radiotherapy and Radiosurgery, until 2005
- The University of Texas MD Anderson Cancer Center, Houston, USA — Clinical Fellow in Advanced Radiation Oncology, until 2007
Academic & Research Roles
- Associate Professor, Department of Radiology (Division of Radiation Oncology), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok
- President for Academic Affairs, Thai Association of Radiation Oncology (2018-2021)
Key Achievements
- Author of 40+ peer-reviewed publications in radiation oncology
- International fellowships at Harvard Medical School and MD Anderson Cancer Center
- Former President for Academic Affairs, Thai Association of Radiation Oncology
- Recognised academic authority in head & neck and CNS radiotherapy in Thailand
Awards & Recognitions
National & International Awards
- Information not publicly available.
Professional Memberships
- Thai Medical Council
- Thai Association of Radiation Oncology (former President for Academic Affairs)
- Thai Board of Radiation Oncology
Research & Publications
Published Papers (Selected)
- Author of 40+ peer-reviewed publications on head & neck cancer radiotherapy, CNS radiosurgery, cervical and endometrial cancer brachytherapy, and chemoradiation outcomes (full citation list available via academic databases).
- Petsuksiri J, et al. Research on image-guided brachytherapy and radiotherapy outcomes for gynaecological and head & neck cancers, published in international oncology journals.
Ongoing Research & Clinical Interests
- Head & neck cancer radiotherapy
- CNS radiosurgery and brain tumour radiotherapy
- Image-guided brachytherapy for gynaecological cancers
Estimated Treatment Costs
| Procedure / Consultation | Estimated Cost (INR) | Estimated Cost (USD) |
|---|---|---|
| Radiation Oncology Consultation | ₹3,000 – ₹6,500 | $35 – $80 |
| IMRT (full course, site-dependent) | ₹3,50,000 – ₹9,00,000 | $4,200 – $10,800 |
| Stereotactic Radiosurgery (SRS/SRT) | ₹2,50,000 – ₹7,00,000 | $3,000 – $8,400 |
| Image-Guided Radiotherapy (IGRT) | ₹3,00,000 – ₹8,00,000 | $3,600 – $9,600 |
| HDR Brachytherapy (per session) | ₹40,000 – ₹1,20,000 | $480 – $1,450 |
| External Beam Radiotherapy (full course) | ₹2,00,000 – ₹5,50,000 | $2,400 – $6,600 |
| PET-CT Scan | ₹35,000 – ₹70,000 | $420 – $850 |
*Indicative estimates only. Actual costs subject to hospital pricing, case complexity, and insurance. Contact Cancer Rounds for a personalised quote.
Frequently Asked Questions
1. What advanced technologies does Assoc. Prof. Janjira Petsuksiri use in Radiation Oncologist treatment?
Assoc. Prof. Janjira Petsuksiri uses advanced radiotherapy platforms including intensity-modulated radiation therapy (IMRT), image-guided radiotherapy (IGRT), stereotactic radiosurgery and radiotherapy (SRS/SRT), and high-dose-rate brachytherapy, with treatment planned through multidisciplinary tumour boards.
2. What conditions does Assoc. Prof. Janjira Petsuksiri specialize in treating?
Assoc. Prof. Janjira Petsuksiri specialises in head & neck cancers, brain and CNS tumours, nasopharyngeal cancer, cervical and endometrial cancers, prostate cancer, and breast cancer. She is regarded as one of the leading Radiation Oncologist specialist in Bangkok, Thailand.
3. How do I book an appointment with Assoc. Prof. Janjira Petsuksiri?
Appointments with Assoc. Prof. Janjira Petsuksiri can be booked directly through the Cancer Rounds website or by contacting their international patient department for priority scheduling.
4. Can international patients receive treatment from Assoc. Prof. Janjira Petsuksiri?
Yes. Cancer Rounds provides full assistance for international patients seeking treatment from Assoc. Prof. Janjira Petsuksiri, including medical visa invitation letters, airport transfers, and local accommodation coordination.
5. What support is available for international patients?
International patients benefit from a dedicated concierge service provided by Cancer Rounds, including language interpretation, financial counselling, and pre-travel virtual consultations to review medical records before arrival.
6. Does Assoc. Prof. Janjira Petsuksiri offer second opinions for Radiation Oncologist cases?
Yes. Second opinion consultations can be arranged via Cancer Rounds for patients who wish to review their diagnosis or treatment plan with an expert Radiation Oncologist specialist in Bangkok, Thailand.

















