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| This glossary contains: 19186 medical terms |
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Photodynamic radiation therapy
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Photodynamic radiation therapyA light sensitive drug is given through a vein and concentrates in the tumor. Then, during a surgical procedure, a special light activates the drug. The activated drug kills tumor cells.
RELATED TERMS--------------------------------------
Vein
A blood vessel that carries blood from the body back into the heart.
Tumor
Overgrowth of tissue.
SIMILAR TERMS--------------------------------------
Photocoagulation
Using a special strong beam of light (laser) to seal off bleeding blood vessels such as in the eye. The laser can also burn away blood vessels that should not have grown in the eye. This is the main treatment for diabetic retinopathy.
Photofrin
Photofrin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): porfimer sodium.
Photophobia
Severe discomfort to bright lights. Usually a symptom of eye disease, such as glaucoma, in an infant or retinal disease in a child or adult. Sometimes treated with dark sunglasses.
Photopic
Bright light conditions where only the cones are functional.
Photoreceptor
A light sensitive neuron. Photoreceptors interact with light which produces changes in their electrical properties which are communicated to other neurons. They constitute the first stage in the physiological process which underlies vision. The human retina, like the retina of most vertebrates, contains two broad classes of photo-receptors, rods and cones.
Photoreceptor mosaic
The spacial arrangement of photoreceptors in the retina.
Phototherapy
The use of ultraviolet light to treat newborns with jaundice.
PREVIOUS AND NEXT TERMS--------------------------------------
Pyridoxine
Vitamin B6, sometimes used to treat nausea in pregnancy or to manage premenstrual syndrome symptoms.
Pyrogen
Something that causes fever.
Perfusionist
During heart surgery, blood is detoured outside the body through a machine in order to bypass the heart, allowing surgery to proceed.ÿ The perfusionist is the person who monitors and controls the flow of blood through this machine.
Palliative care
Caring for a patient by maintaining the best quality of remaining life. Also offering support and guidance to the patient and family.
Phenobarbitol
A sedating medication used to control seizures.
Photodynamic radiation therapy
Primary brain tumor
Original source of tumor is the brain rather than other areas of the body.
Primitive
Undeveloped or in early stages of development, undifferentiated.
Protocol
An outline of care; a treatment plan.
Proto-oncogenes
Fragments of genetic material (DNA), related to oncogenes, but are the normal "switches" used to control growth and tissue repair.
Proximal
Located closest to the reference point. See distal.
RELATED TERMS--------------------------------------
Vein
A blood vessel that carries blood from the body back into the heart.
Tumor
Overgrowth of tissue.
SIMILAR TERMS--------------------------------------
Photocoagulation
Using a special strong beam of light (laser) to seal off bleeding blood vessels such as in the eye. The laser can also burn away blood vessels that should not have grown in the eye. This is the main treatment for diabetic retinopathy.
Photofrin
Photofrin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): porfimer sodium.
Photophobia
Severe discomfort to bright lights. Usually a symptom of eye disease, such as glaucoma, in an infant or retinal disease in a child or adult. Sometimes treated with dark sunglasses.
Photopic
Bright light conditions where only the cones are functional.
Photoreceptor
A light sensitive neuron. Photoreceptors interact with light which produces changes in their electrical properties which are communicated to other neurons. They constitute the first stage in the physiological process which underlies vision. The human retina, like the retina of most vertebrates, contains two broad classes of photo-receptors, rods and cones.
Photoreceptor mosaic
The spacial arrangement of photoreceptors in the retina.
Phototherapy
The use of ultraviolet light to treat newborns with jaundice.
PREVIOUS AND NEXT TERMS--------------------------------------
Pyridoxine
Vitamin B6, sometimes used to treat nausea in pregnancy or to manage premenstrual syndrome symptoms.
Pyrogen
Something that causes fever.
Perfusionist
During heart surgery, blood is detoured outside the body through a machine in order to bypass the heart, allowing surgery to proceed.ÿ The perfusionist is the person who monitors and controls the flow of blood through this machine.
Palliative care
Caring for a patient by maintaining the best quality of remaining life. Also offering support and guidance to the patient and family.
Phenobarbitol
A sedating medication used to control seizures.
Photodynamic radiation therapy
Primary brain tumor
Original source of tumor is the brain rather than other areas of the body.
Primitive
Undeveloped or in early stages of development, undifferentiated.
Protocol
An outline of care; a treatment plan.
Proto-oncogenes
Fragments of genetic material (DNA), related to oncogenes, but are the normal "switches" used to control growth and tissue repair.
Proximal
Located closest to the reference point. See distal.
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This dictionary contains 19186 terms.
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