# Mini-gantry for proton therapy

> **NIH NIH R03** · MASSACHUSETTS GENERAL HOSPITAL · 2024 · $83,500

## Abstract

ABSTRACT
 We hypothesize that a room-temperature, 360°, isocentric proton therapy gantry fits inside a
Linac vault, a.k.a the Mini-Gantry. This would enable the conversion of two neighboring Linac
vaults (one for the Mini-Gantry and one for the accelerator) into an ultra-compact proton therapy
center and increase the accessibility of proton therapy, especially in urban centers with existing
linear accelerator vaults where space is a constraint. Existing proton therapy gantries are larger
than 24’ in diameter. The proton gantries at Massachusetts General Hospital occupy 3 stories.
The IBA ProteusOne gantry is 25’ in diameter. None of these fit in a typical 12’ high basement
of a high-rise building and require custom-designed spaces. The aim is to optimize the proton
maximum energy and treatment field size in the Mini-Gantry while maintaining 12’ diameter and
produce designs. This effort determines the feasibility of the Mini-Gantry concept which is a
stepping stone to publications, grants, patents, prototypes, and partnering with a proton therapy
vendor.
Contains proprietary information that B. Clasie requests not be released to persons outside the
government, except for purposes of review and evaluation._

## Key facts

- **NIH application ID:** 10855497
- **Project number:** 1R03CA280213-01A1
- **Recipient organization:** MASSACHUSETTS GENERAL HOSPITAL
- **Principal Investigator:** Benjamin Clasie
- **Activity code:** R03 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2024
- **Award amount:** $83,500
- **Award type:** 1
- **Project period:** 2024-03-01 → 2026-02-28

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10855497

## Citation

> US National Institutes of Health, RePORTER application 10855497, Mini-gantry for proton therapy (1R03CA280213-01A1). Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/grant/nih/10855497. Licensed CC0.

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