Abstract: A photochemotherapy dosimeter for monitoring cumulative photochemotherapy radiation dosage. The photochemotherapy dosimeter includes an optical fiber having a chemical cell attached at one end thereof. The chemical cell contains a photobleachable chemical which can be in a solution or incorporated into a matrix material. Changes in the absorption of the photobleachable chemical are used to monitor the cumulative photochemotherapy radiation dosage. In use, the chemical cell of the photochemotherapy dosimeter is positioned near an abnormal tissue which is subjected to photochemotherapy treatment.

Abstract: A solid-state fluorescent dosimeter for monitoring therapy irradiation dosage during a photodynamic therapy procedure. The solid-state fluorescent dosimeter includes an optical fiber -having a distal end and a proximal end, and a solid-state fluorescent tip attached to the proximal end of the optical fiber. The solid-state fluorescent tip includes a fluorescent material which emits fluorescence when exposed to non-ionizing radiation in the visible or near infrared range. The solid-state fluorescent tip has a sufficient length so as ensure isotropic response characteristics to the non-ionizing radiation regardless of the orientation or alignment of the solid-state fluorescent tip relative to the irradiation source.

Abstract: A photochemotherapy dosimeter for monitoring cumulative photochemotherapy radiation dosage. The photochemotherapy dosimeter includes an optical fiber having a chemical cell attached at one end thereof. The chemical cell contains a photobleachable chemical which can be in a solution or incorporated into a matrix material. Changes in the absorption of the photobleachable chemical are used to monitor the cumulative photochemotherapy radiation dosage. In use, the chemical cell of the photochemotherapy dosimeter is positioned near an abnormal tissue which is subjected to photochemotherapy treatment.