ELogs/JamesGolbourn - Revision history

JamesGolbourn: /* Tasks Completed */

2019-06-20T10:24:26Z

Tasks Completed

← Older revision		Revision as of 10:24, 20 June 2019
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	* Added links to wiki.		* Added links to wiki.
	* Summarised research essay in wiki.		* Summarised research essay in wiki.
			* Met with Alison to discuss some QA detector designs.

	== Key Dates ==		== Key Dates ==

JamesGolbourn: /* Structure */

2019-06-17T18:59:09Z

Structure

← Older revision		Revision as of 18:59, 17 June 2019
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	** Diodes + ion chambers		** Diodes + ion chambers
	** 2 strip chambers orientated perpendicular to each other back to back.		** 2 strip chambers orientated perpendicular to each other back to back.
	** Central chamber with 4 strip chambers with alternating orientations surrounding it.
	* Future work		* Future work
	* Summary		* Summary

JamesGolbourn: /* Structure */

2019-06-17T18:56:09Z

Structure

← Older revision		Revision as of 18:56, 17 June 2019
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	** Scintillator stack		** Scintillator stack
	** Diodes + ion chambers		** Diodes + ion chambers
	** 2 strip chambers orientated perpendicular to each other.		** 2 strip chambers orientated perpendicular to each other back to back.
			** Central chamber with 4 strip chambers with alternating orientations surrounding it.
	* Future work		* Future work
	* Summary		* Summary

JamesGolbourn: /* Timeline */

2019-06-14T16:31:21Z

Timeline

← Older revision		Revision as of 16:31, 14 June 2019
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	* Introduction, beam characteristics and detector types written by 21/07		* Introduction, beam characteristics and detector types written by 21/07
	* Some initial drawing designs to show Simon by 17/07		* Some initial drawing designs to show Simon by 17/07

			=== Potential Design Blueprint ===
			* Some kind of diagram
			* Components and their size and position relative to each other
			* Justification
			* What measurements it would be capable of and precision
			* Limitations and considerations
			* Similar designs investigated in literature.
			* How could it be improved

JamesGolbourn: /* Structure */

2019-06-14T16:25:16Z

Structure

← Older revision		Revision as of 16:25, 14 June 2019
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	* Future work		* Future work
	* Summary		* Summary

			=== Timeline ===
			* Introduction, beam characteristics and detector types written by 21/07
			* Some initial drawing designs to show Simon by 17/07

JamesGolbourn: /* Dissertation Plan */

2019-06-14T16:21:15Z

Dissertation Plan

← Older revision		Revision as of 16:21, 14 June 2019
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	== Dissertation Plan ==		== Dissertation Plan ==

			=== Structure ===
			* Abstract
			* Introduction:
			** Radiotherapy background
			** Physics behind PBT
			** Advantages of PBT
			** QA and why its needed
			* Beam Characteristics - what's measured and why
			** Output
			** Range/ Energy
			** Spot position and size
			** Flatness and Symmetry
			** Further daily QA checks
			* Detector types (and examples of commercially available ones and examples of clinical procedures with them)
			** Scintillator: Lynx, plastic scintillator
			** Ionization Chambers: Thimble, farmer, parallel plate, MLIC
			** Diodes
			** Film dosimetry
			* Potential detector designs
			** Scintillator + phantom
			** Scintillator volume
			** Scintillator stack
			** Diodes + ion chambers
			** 2 strip chambers orientated perpendicular to each other.
			* Future work
			* Summary

JamesGolbourn: /* Feedback and improvements on Research Essay */

2019-06-14T16:08:48Z

Feedback and improvements on Research Essay

← Older revision		Revision as of 16:08, 14 June 2019
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	* Abstract as a summary at beginning to summarise the whole point.		* Abstract as a summary at beginning to summarise the whole point.
	* Better quality images would be good.		* Better quality images would be good.

			== Dissertation Plan ==

JamesGolbourn: /* Other Factors to Consider When Designing */

2019-06-11T11:24:40Z

Other Factors to Consider When Designing

← Older revision		Revision as of 11:24, 11 June 2019
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	A daily QA device will need to be robust enough to withstand knocks without altering the calibration of the device. There are also interesting applications for how the data collected by the QA device can be communicated with the user. For example, Simon and I discussed the possibility of the device being WiFi enabled and connected to a tablet device where the results from the QA procedure can be visualised on the tablet in real time. An alternative method would be for there to be a USB port on the device such that the data stored can be uploaded onto a computer screen and the QA results displayed on there. The storing of the data collected from daily QA has advantages. One advantage would be that direct comparisons could be made between that day's measurement and the immediately prior days, and if the recorded value lies within an error range of previous measurements this could provide an opportunity to reduce the time taken for QA procedures by comparing relative measurements. Furthermore, the storing of daily QA data would allow for a continuous tracking in the performance of the beam delivery system at regular intervals, which would better allow engineers to predict when maintenance work would be required on the delivery system. For visual measurements, for example those carried out with a scintillator screen to check for spot position, direct comparisons with previous measurements would be more difficult. Initially when a centre begins treatment after commissioning, storing the data collected is especially important to increase confidence in the delivery system and in QA measurements. The data can be used to inform which devices are required for different QA checks and to the precision required as the confidence in the stability of the system increases.		A daily QA device will need to be robust enough to withstand knocks without altering the calibration of the device. There are also interesting applications for how the data collected by the QA device can be communicated with the user. For example, Simon and I discussed the possibility of the device being WiFi enabled and connected to a tablet device where the results from the QA procedure can be visualised on the tablet in real time. An alternative method would be for there to be a USB port on the device such that the data stored can be uploaded onto a computer screen and the QA results displayed on there. The storing of the data collected from daily QA has advantages. One advantage would be that direct comparisons could be made between that day's measurement and the immediately prior days, and if the recorded value lies within an error range of previous measurements this could provide an opportunity to reduce the time taken for QA procedures by comparing relative measurements. Furthermore, the storing of daily QA data would allow for a continuous tracking in the performance of the beam delivery system at regular intervals, which would better allow engineers to predict when maintenance work would be required on the delivery system. For visual measurements, for example those carried out with a scintillator screen to check for spot position, direct comparisons with previous measurements would be more difficult. Initially when a centre begins treatment after commissioning, storing the data collected is especially important to increase confidence in the delivery system and in QA measurements. The data can be used to inform which devices are required for different QA checks and to the precision required as the confidence in the stability of the system increases.

			Alison and I also discussed further factors to consider when designing. Firstly, the weight of the detector, ideally want it to be light enough for one person to carry it. Scintillator screen currently used at UCLH is heavy and requires 2 people. The size of the detector is also important, smaller detectors are more practical but are often more expensive due to smaller electrical components. Alison thought that mounting the detector to the nozzle for measurements at multiple gantry angles would be ideal. Also interesting consideration more with commissioning, need to account for Earth's magnetic field with gantry angle due to scanning magnets. UCLH will initially want all data recorded from daily QA to keep a log of it.

	== To Do ==		== To Do ==

JamesGolbourn: /* Project Direction */

2019-06-07T13:50:25Z

Project Direction

← Older revision		Revision as of 13:50, 7 June 2019
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	== Project Direction ==		== Project Direction ==

	The project will be split into two sections, the first will be similar to the research essay and will be a survey on current quality assurance procedures clinically used. The second will be on focused on the features of an ideal integrated QA device, including what beam characteristics it will measure, how long it will take and the precision of the measurements.		The project will be split into two sections, the first will be similar to the research essay and will be a survey on current quality assurance procedures clinically used. The second will be on focused on the features of an ideal integrated QA device, including what beam characteristics it will measure, how long it will take and the precision of the measurements. Potential basic CAD model of an ideal detector device e.g one that could be mounted onto the nozzle. When talking about ideal should be specific regarding which measurements, how quickly

	=== Scintillator Columns ===		=== Scintillator Columns ===

JamesGolbourn: /* Project Direction */

2019-06-05T16:41:26Z

Project Direction

← Older revision		Revision as of 16:41, 5 June 2019
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	=== Potential QA with Sun QA 3 ===		=== Potential QA with Sun QA 3 ===

	Would be good to make use of both the diode sets and the ionization chambers. To get range measurements at different depths could put a plastic build up in front of the electron ionization chambers corresponding to different depths. Spot position can be inferred from the diode triplet set. The shape and size of the spot can be reconstructed from the diode information e.g reconstructing Gaussian shape.		Would be good to make use of both the diode sets and the ionization chambers. To get range measurements at different depths could put a plastic build up in front of the electron ionization chambers corresponding to different depths. Spot position can be inferred from the diode triplet set. The shape and size of the spot can be reconstructed from the diode information e.g reconstructing Gaussian shape. Different spot patterns can be

			=== Other Factors to Consider When Designing ===

			A daily QA device will need to be robust enough to withstand knocks without altering the calibration of the device. There are also interesting applications for how the data collected by the QA device can be communicated with the user. For example, Simon and I discussed the possibility of the device being WiFi enabled and connected to a tablet device where the results from the QA procedure can be visualised on the tablet in real time. An alternative method would be for there to be a USB port on the device such that the data stored can be uploaded onto a computer screen and the QA results displayed on there. The storing of the data collected from daily QA has advantages. One advantage would be that direct comparisons could be made between that day's measurement and the immediately prior days, and if the recorded value lies within an error range of previous measurements this could provide an opportunity to reduce the time taken for QA procedures by comparing relative measurements. Furthermore, the storing of daily QA data would allow for a continuous tracking in the performance of the beam delivery system at regular intervals, which would better allow engineers to predict when maintenance work would be required on the delivery system. For visual measurements, for example those carried out with a scintillator screen to check for spot position, direct comparisons with previous measurements would be more difficult. Initially when a centre begins treatment after commissioning, storing the data collected is especially important to increase confidence in the delivery system and in QA measurements. The data can be used to inform which devices are required for different QA checks and to the precision required as the confidence in the stability of the system increases.

	== To Do ==		== To Do ==