pill camera

[seminar class]

presented by:
REKHA.G

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Introduction to Capsule Camera
. Imagine a vitamin pill-sized camera that could travel through your body taking pictures, helping diagnose a problem which doctor previously would have found only through surgery.
. Conventional Method
Endoscopic examination is replaced by PILL CAMERA.
Description
The device, called the given Diagnostic Imaging System, comes in capsule form and contains a camera, lights, transmitter and batteries.
The latest pill camera is sized at 26*11 mm and is capable of transmitting 50,000 color images during its traversal through the digestive system of patient.
1.Optical Dome
 This shape results in easy orientation of the capsule axis along the central axis of small intestine and so helps propel the capsule forward easily.
 The Optical Dome contains the Light Receiving Window .
2.Lens Holder
The Lens Holder is that part of the capsule which accommodates the lens. The lens is tightly fixed to the holder so that it doesn’t get dislocated anytime
3.Lens
 The Lens is an integral component of the capsule.
 It is arranged behind the Light Receiving Window.
4.Illuminating LED’s
Around the Lens & CMOS Image Sensor, four LED’s (Light Emitting Diodes) are present. These plural lighting devices are arranged in donut shape
5.CMOS Image Sensor
 CMOS (Complementary Metal Oxide Semiconductor) Image Sensor is the most important part of the capsule. It is highly sensitive and produces very high quality images.
 It has 140º field of view and can detect objects as small as possible.
6.Battery
 Battery used in the capsule is button shaped and are two in number as shown. The batteries are arranged together just behind the CMOS Image Sensor.
 Silver Oxide primary batteries are used (Zinc/Alkaline Electrolyte/Silver Oxide). Such a battery has a even discharge voltage, disposable and doesn’t cause harm to the body.
7.ASIC Transmitter
 The ASIC (Application Specific Integrated Circuit) Transmitter is arranged behind the Batteries as shown. Two Transmitting Electrodes are connected to the outlines of the ASIC Transmitter.These electrodes are electrically isolated from each other.
8.Antennae
 As shown, the Antennae is arranged at the end of the capsule. It is enclosed in a dome shaped chamber.
Endoscopy Procedure
 Capsule is swallowed by the patient like a conventional pill.
 It takes images as it is propelled forward by peristalsis.
 A wireless recorder, worn on a belt, receives the images
transmitted by the pill.
 A computer workstation processes the data and produces a
continuous still images.