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What Is the Penumbra of a Cobalt 60 Machine with a Source

question 9

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What is the penumbra of a cobalt 60 machine with a source size of 3 cm,an SSD of 80 cm,and a source-to-diaphragm distance of 30?


Definitions:

Embryonic Skeleton

The initial cartilaginous and fibrous structure that will develop into the bony skeleton of an organism during its embryonic phase.

Cartilage

A flexible, rubbery connective tissue found in various parts of the body, providing structure and reducing friction between bones.

Synovial Joint

Capsule-enclosed joint at which cartilage-covered ends of bones are separated by a fluid-filled space.

Muscle Fiber

The cylindrical, multinucleate cells that make up skeletal muscles, responsible for contracting to produce movement.

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